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<hr><h1>bsp_tree.h</h1><a href="bsp__tree_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
00007 <font class="comment">/* Copyright, 2000 Nevrax Ltd.</font>
00008 <font class="comment"> *</font>
00009 <font class="comment"> * This file is part of NEVRAX NEL.</font>
00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font>
00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font>
00013 <font class="comment"> * any later version.</font>
00014 <font class="comment"></font>
00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font>
00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
00018 <font class="comment"> * General Public License for more details.</font>
00019 <font class="comment"></font>
00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font>
00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font>
00023 <font class="comment"> * MA 02111-1307, USA.</font>
00024 <font class="comment"> */</font>
00025
00026
00027 <font class="preprocessor">#ifndef NL_BSP_TREE_H</font>
00028 <font class="preprocessor"></font><font class="preprocessor">#define NL_BSP_TREE_H</font>
00029 <font class="preprocessor"></font>
00030 <font class="preprocessor">#include "<a class="code" href="debug_8h.html">nel/misc/debug.h</a>"</font>
00031 <font class="preprocessor">#include "<a class="code" href="vector_8h.html">nel/misc/vector.h</a>"</font>
00032 <font class="preprocessor">#include "<a class="code" href="plane_8h.html">nel/misc/plane.h</a>"</font>
00033 <font class="preprocessor">#include "<a class="code" href="matrix_8h.html">nel/misc/matrix.h</a>"</font>
00034 <font class="preprocessor">#include "<a class="code" href="triangle_8h.html">nel/misc/triangle.h</a>"</font>
00035 <font class="preprocessor">#include <list></font>
00036 <font class="preprocessor">#include <vector></font>
00037
00038
00039 <font class="keyword">namespace </font>NL3D
00040 {
00041
00042
00043
<a name="l00051"></a><a class="code" href="classNL3D_1_1CBSPTree.html">00051</a> <font class="keyword">template</font><<font class="keyword">class</font> T> <font class="keyword">class </font>CBSPTree
00052 {
00053
00054 <font class="keyword">public</font>:
00055
00057 <a class="code" href="classNL3D_1_1CBSPTree.html#a0">CBSPTree</a>();
00058
00060 <a class="code" href="classNL3D_1_1CBSPTree.html#a1">~CBSPTree</a>();
00061
00062 <font class="keyword">public</font>:
00063
00064 <font class="keywordtype">void</font> <a class="code" href="classNL3D_1_1CBSPTree.html#a2">insert</a>( <a class="code" href="classNLMISC_1_1CTriangle.html">NLMISC::CTriangle</a> &tri, T &<a class="code" href="driver__opengl__extension__def_8h.html#a415">value</a> );
00065 sint32 <a class="code" href="classNL3D_1_1CBSPTree.html#a3">select</a>( CVector &v1, CVector &v2 );
00066 T <a class="code" href="classNL3D_1_1CBSPTree.html#a4">getSelection</a>( sint32 i );
00067 sint32 <a class="code" href="classNL3D_1_1CBSPTree.html#a5">getNbNode</a>();
00068
00069 <font class="keyword">private</font>:
00070
00071 <font class="keyword">class </font>CBSPNode;
<a name="l00072"></a><a class="code" href="classNL3D_1_1CBSPTree.html#o0">00072</a> std::vector<CBSPNode*> <a class="code" href="classNL3D_1_1CBSPTree.html#o0">_Selection</a>;
00073
00074 <font class="keyword">private</font>:
00075
<a name="l00076"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html">00076</a> <font class="keyword">class </font>CBSPNode
00077 {
<a name="l00078"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#o1">00078</a> <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">CBSPNode</a> *<a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#o0">pBack</a>, *<a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#o1">pFront</a>;
<a name="l00079"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#o2">00079</a> CPlane <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#o2">p</a>;
00080
00081 <font class="keyword">public</font>:
00082
<a name="l00083"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#m0">00083</a> T <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#m0">Value</a>;
00084
00085 <font class="keyword">public</font>:
00086
<a name="l00087"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">00087</a> <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">CBSPNode</a>( <a class="code" href="classNLMISC_1_1CTriangle.html">NLMISC::CTriangle</a> &tri, T &val ) : <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#m0">Value</a>(val), pBack(NULL), pFront(NULL)
00088 {
00089 <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#o2">p</a>.make( tri.<a class="code" href="classNLMISC_1_1CTriangle.html#m0">V0</a>, tri.<a class="code" href="classNLMISC_1_1CTriangle.html#m1">V1</a>, tri.<a class="code" href="classNLMISC_1_1CTriangle.html#m2">V2</a> );
00090 <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#o2">p</a>.normalize();
00091 }
00092
<a name="l00093"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a1">00093</a> <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a1">~CBSPNode</a>()
00094 {
00095 <font class="keywordflow">if</font>( pBack != NULL )
00096 <font class="keyword">delete</font> pBack;
00097 <font class="keywordflow">if</font>( pFront != NULL )
00098 <font class="keyword">delete</font> pFront;
00099 }
00100
<a name="l00101"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a2">00101</a> <font class="keywordtype">void</font> <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a2">insert</a>( <a class="code" href="classNLMISC_1_1CTriangle.html">NLMISC::CTriangle</a> &tri, T &val )
00102 {
00103 <font class="keywordtype">float</font> f[3];
00104 <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">CBSPNode</a> *pCurrent = <font class="keyword">this</font>;
00105
00106 <font class="keywordflow">while</font>( true )
00107 {
00108 f[0] = pCurrent->p*tri.<a class="code" href="classNLMISC_1_1CTriangle.html#m0">V0</a>;
00109 f[1] = pCurrent->p*tri.<a class="code" href="classNLMISC_1_1CTriangle.html#m1">V1</a>,
00110 f[2] = pCurrent->p*tri.<a class="code" href="classNLMISC_1_1CTriangle.html#m2">V2</a>;
00111 <font class="keywordflow">if</font>( fabs( f[0] ) < 0.00001 ) f[0] = 0.0f;
00112 <font class="keywordflow">if</font>( fabs( f[1] ) < 0.00001 ) f[1] = 0.0f;
00113 <font class="keywordflow">if</font>( fabs( f[2] ) < 0.00001 ) f[2] = 0.0f;
00114 <font class="keywordflow">if</font>( ( f[0] >= 0.0f ) && ( f[1] >= 0.0f ) && ( f[2] >= 0.0f ) )
00115 { <font class="comment">// All front</font>
00116 <font class="keywordflow">if</font>( pCurrent->pFront == NULL )
00117 {
00118 pCurrent->pFront = <font class="keyword">new</font> <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">CBSPNode</a>( tri, val );
00119 <font class="keywordflow">return</font>;
00120 }
00121 <font class="keywordflow">else</font>
00122 {
00123 pCurrent = pCurrent->pFront;
00124 }
00125 }
00126 <font class="keywordflow">else</font>
00127 <font class="keywordflow">if</font>( ( f[0] <= 0.0f ) && ( f[1] <= 0.0f ) && ( f[2] <= 0.0f ) )
00128 { <font class="comment">// All back</font>
00129 <font class="keywordflow">if</font>( pCurrent->pBack == NULL )
00130 {
00131 pCurrent->pBack = <font class="keyword">new</font> <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">CBSPNode</a>( tri, val );
00132 <font class="keywordflow">return</font>;
00133 }
00134 <font class="keywordflow">else</font>
00135 {
00136 pCurrent = pCurrent->pBack;
00137 }
00138 }
00139 <font class="keywordflow">else</font>
00140 {
00141 <font class="keywordflow">if</font>( pCurrent->pFront == NULL )
00142 {
00143 pCurrent->pFront = <font class="keyword">new</font> <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">CBSPNode</a>( tri, val );
00144 }
00145 <font class="keywordflow">else</font>
00146 {
00147 pCurrent->pFront->insert( tri, val );
00148 }
00149 <font class="keywordflow">if</font>( pCurrent->pBack == NULL )
00150 {
00151 pCurrent->pBack = <font class="keyword">new</font> <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">CBSPNode</a>( tri, val );
00152 }
00153 <font class="keywordflow">else</font>
00154 {
00155 pCurrent->pBack->insert( tri, val );
00156 }
00157 <font class="keywordflow">return</font>;
00158 }
00159 }
00160 }
00161
00162
<a name="l00163"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a3">00163</a> sint32 <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a3">getNbNode</a>()
00164 {
00165 sint32 nBack = 0, nFront= 0;
00166 <font class="keywordflow">if</font>( pBack != NULL )
00167 nBack = pBack->getNbNode();
00168 <font class="keywordflow">if</font>( pFront != NULL )
00169 nFront = pFront->getNbNode();
00170 <font class="keywordflow">return</font> 1+nBack+nFront;
00171 }
00172
00173
<a name="l00174"></a><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a4">00174</a> <font class="keywordtype">void</font> <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a4">select</a>( std::vector<CBSPNode*> &sel, CVector &v1, CVector &v2 )
00175 {
00176 <font class="keywordtype">float</font> f[2];
00177 <a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a0">CBSPNode</a> *pCurrent = <font class="keyword">this</font>;
00178
00179 <font class="keywordflow">while</font>( true )
00180 {
00181 f[0] = pCurrent->p*v1;
00182 f[1] = pCurrent->p*v2;
00183 <font class="keywordflow">if</font>( fabs( f[0] ) < 0.00001 ) f[0] = 0.0;
00184 <font class="keywordflow">if</font>( fabs( f[1] ) < 0.00001 ) f[1] = 0.0;
00185 <font class="keywordflow">if</font>( ( f[0] >= 0.0 ) && ( f[1] >= 0.0 ) )
00186 { <font class="comment">// All front</font>
00187 <font class="keywordflow">if</font>( pCurrent->pFront == NULL )
00188 {
00189 <font class="keywordflow">return</font>;
00190 }
00191 <font class="keywordflow">else</font>
00192 {
00193 pCurrent = pCurrent->pFront;
00194 }
00195 }
00196 <font class="keywordflow">else</font>
00197 <font class="keywordflow">if</font>( ( f[0] <= 0.0 ) && ( f[1] <= 0.0 ) )
00198 { <font class="comment">// All back</font>
00199 <font class="keywordflow">if</font>( pCurrent->pBack == NULL )
00200 {
00201 <font class="keywordflow">return</font>;
00202 }
00203 <font class="keywordflow">else</font>
00204 {
00205 pCurrent = pCurrent->pBack;
00206 }
00207 }
00208 <font class="keywordflow">else</font>
00209 {
00210 <font class="keywordflow">if</font>( sel.size() == sel.capacity() )
00211 sel.reserve( sel.size() + 64 );
00212 sel.push_back( <font class="keyword">this</font> );
00213 <font class="keywordflow">if</font>( pCurrent->pFront == NULL )
00214 {
00215 }
00216 <font class="keywordflow">else</font>
00217 {
00218 <font class="comment">//CVector newV1 = v1;</font>
00219 <font class="comment">//CVector newV2 = v2;</font>
00220 <font class="comment">//pCurrent->p.clipSegmentFront( newV1, newV2 );</font>
00221 <font class="comment">//pCurrent->pFront->select( sel, newV1, newV2 );</font>
00222 pCurrent->pFront->select( sel, v1, v2 );
00223 }
00224 <font class="keywordflow">if</font>( pCurrent->pBack == NULL )
00225 {
00226 }
00227 <font class="keywordflow">else</font>
00228 {
00229 <font class="comment">//CVector newV1 = v1;</font>
00230 <font class="comment">//CVector newV2 = v2;</font>
00231 <font class="comment">//pCurrent->p.clipSegmentBack( newV1, newV2 );</font>
00232 <font class="comment">//pCurrent->pBack->select( sel, newV1, newV2 );</font>
00233 pCurrent->pBack->select( sel, v1, v2 );
00234 }
00235 <font class="keywordflow">return</font>;
00236 }
00237 }
00238 }
00239 };
00240
00241 <font class="keyword">private</font>:
00242
<a name="l00243"></a><a class="code" href="classNL3D_1_1CBSPTree.html#o1">00243</a> CBSPNode *<a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a>;
00244
00245 };
00246
00247 <font class="comment">// ============================================================================================</font>
00248 <font class="comment">// ============================================================================================</font>
00249 <font class="comment">// Template CBSPTree implementation. Construction/Destruction.</font>
00250 <font class="comment">// ============================================================================================</font>
00251 <font class="comment">// ============================================================================================</font>
00252
<a name="l00253"></a><a class="code" href="classNL3D_1_1CBSPTree.html#a0">00253</a> <font class="keyword">template</font><<font class="keyword">class</font> T> CBSPTree<T>::CBSPTree() : _Root(NULL)
00254 {
00255 <a class="code" href="classNL3D_1_1CBSPTree.html#o0">_Selection</a>.reserve( 64 );
00256 }
00257
<a name="l00258"></a><a class="code" href="classNL3D_1_1CBSPTree.html#a1">00258</a> <font class="keyword">template</font><<font class="keyword">class</font> T> CBSPTree<T>::~CBSPTree()
00259 {
00260 <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a> != NULL )
00261 <font class="keyword">delete</font> <a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a>;
00262 }
00263
00264 <font class="comment">// ============================================================================================</font>
00265 <font class="comment">// ============================================================================================</font>
00266 <font class="comment">// Template CBSPTree implementation.</font>
00267 <font class="comment">// ============================================================================================</font>
00268 <font class="comment">// ============================================================================================</font>
00269
<a name="l00270"></a><a class="code" href="classNL3D_1_1CBSPTree.html#a2">00270</a> <font class="keyword">template</font><<font class="keyword">class</font> T> <font class="keywordtype">void</font> CBSPTree<T>::insert( <a class="code" href="classNLMISC_1_1CTriangle.html">NLMISC::CTriangle</a> &tri, T &val )
00271 {
00272 <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a> == NULL )
00273 <a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a> = <font class="keyword">new</font> CBSPNode( tri, val );
00274 <font class="keywordflow">else</font>
00275 <a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a>-><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a2">insert</a>( tri, val );
00276 }
00277
<a name="l00278"></a><a class="code" href="classNL3D_1_1CBSPTree.html#a3">00278</a> <font class="keyword">template</font><<font class="keyword">class</font> T> sint32 CBSPTree<T>::select( CVector &v1, CVector &v2 )
00279 {
00280 <a class="code" href="classNL3D_1_1CBSPTree.html#o0">_Selection</a>.clear();
00281 <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a> != NULL )
00282 {
00283 <a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a>-><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a4">select</a>( <a class="code" href="classNL3D_1_1CBSPTree.html#o0">_Selection</a>, v1, v2 );
00284 <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CBSPTree.html#o0">_Selection</a>.size();
00285 }
00286 <font class="keywordflow">else</font>
00287 <font class="keywordflow">return</font> 0;
00288 }
00289
<a name="l00290"></a><a class="code" href="classNL3D_1_1CBSPTree.html#a4">00290</a> <font class="keyword">template</font><<font class="keyword">class</font> T> T CBSPTree<T>::getSelection( sint32 i )
00291 {
00292 <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CBSPTree.html#o0">_Selection</a>[i]->Value;
00293 }
00294
<a name="l00295"></a><a class="code" href="classNL3D_1_1CBSPTree.html#a5">00295</a> <font class="keyword">template</font><<font class="keyword">class</font> T> sint32 CBSPTree<T>::getNbNode()
00296 {
00297 <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CBSPTree.html#o1">_Root</a>-><a class="code" href="classNL3D_1_1CBSPTree_1_1CBSPNode.html#a3">getNbNode</a>();
00298 }
00299
00300 }
00301
00302 <font class="preprocessor">#endif // NL_BSP_TREE_H</font>
</pre></div>
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